Hey,

I've made a very basic road system, curves with sweeps assigned to them. With my digital asset the user basically feeds in a set of drawn out curves into the asset which converts them to road meshes.
It's a single digital asset which has all the curves, merged and fed into it. The asset then works out intersections between the roads and sweeps them and spits out the geometry.
What I'd like to be able to do, is have the user select a curve (either in the 3d viewport, or in the Digital Asset interface) and be able to change the road type.
The road type is just a change in profile for the sweep. Which is just a set of lines with pre-defined widths.

However, I'm not sure where I even start with this; I can give each curve an attribute, but I don't know how I'd modify that, or even use it to toggle between the road profiles. Or how do I make it smart enough that the the asset knows and can display all the curve details back to the user so they could potentially modify each road with a set of custom controls.

Any help or links to tutorials I've missed would be hugely appreciated, I'm completely lost with this.

Thank you!